Antifriction-bearing.



I No. sez-,373. y Patented nov. 2o, |900.

T. s. nooLEY.

ANTIFRICTIUN BEARING.

(Applicmmi med Apr, 24, 1900.;

WnSses: Invenlor:

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THOMAS B. DOOLEY, OF MALDEN, MASSACHUSETTS.

ANTIFRICTION-BEARING.

SPECIFICATION forming part of Letters Patent No. 662,373, dated November20, 1900.

Application rlled April 24,1900. Serial No. 14,077. (No modeL) T0 allwhom t may concern.-

Be it known that I, THOMAS B. DOOLEY, a citizen of the United States ofAmerica, and a resident of Malden, Middlesex county, Massachusetts, haveinvented certain new and useful Improvements in Antifriction-Bearings,of which the following is a specification.

This invention relates generically to antit'rictionbearings,and morespecifically to that class of bearings commonly termed roller`bearings."7

An object of the present invention is to furnish an antifriction-bearingof improved, simplied, and efficient construction and organizationcapable of sustaining heavy loads Without misalinement or cramping dueto injurious end thrusts, uneven wear, and similar causes found to existin many bearings of known construction;

A further object of the invention is to provide a bearing especiallyadapted for use in connection with the wheels of heavy vehicles, such asmotor-vehicles, wherein it is desirable to secure a long rolling supportfor the Wheel extending. approximately the entire length of the hub andwith the least possible friction.

With these objects in view the invention consists in certain details ofconstruction and in the special combination and organization of theseveral parts of the antifriction-bear ing, substantially as hereinafterdescribed and more fully pointed out in the claim.

In the drawings accompanying and forming part of this specification,Figure 1 is a central longitudinal section, partly in elevation, of

an antifriction-bearing embodying one form of the present invention, aportion only of the shaft or axle being shown; and Fig. 2 is across-sectional view of the bearing, taken on a line corresponding tothe dotted line a; c in Fig. l, as seen from the left in said figure,the balls and rollers being shown in elevation.

Similar characters refer to like partsin both figures of the drawings.

As a preamble to the detailed description of my improved bearing it isdesired to state, inasmuch as the same is capable of variousapplications, that the terms shaft and casing are employed herein in theabstract and not technically-that is to say, by the term shaft as'herein employed is meant any centrally-disposed member of anantifriction-bearing, such as a shaft, spindle,axle, or journal of anykind, whether fixed or rotative, and bythe term casing is meant any formof hollow member, such as a hub, journalbox,or casing, fixed orrotative, surrounding said central member and constituting a casing forthe rotative parts of the bearing.

ln the preferred construction and organization shown in the accompanyingdrawings, the antifriction-bearingcomprises,asaWhole, a shaft or axle,(designated in a general way by B5) a cylindrical casing C, surroundingsaid shaft and of an internal diameter considerably greater than thediameter of the shaft; two concentrically-disposed tubular sleeves 2 and3, secured, respectively, to the exterior of the shaft and the interiorof the casing and forming between them an annular raceway havingopposing bearing-faces which are parallel to each other and to thelongitudinal axis of the shaft; a circuit or plural number of elongatedcylindrical rollers (each designated by 4) disposed between and iubearing engagement with the adjacent faces of the two sleeves 2 and 3and having diametrically-reduced conical ends, as hereinafter described;two sets of balls 5 and 6,dis posed circumferentially about oppositeends of the sleeve 2 in alternating disposition with respect to andlocated between the ends of the rollers7 and dust-proof confining orretaining means (designated in a general Way by d and d', respectively)in adjustable connection with opposite ends of the casing C.

The shaft B, which may be of any suitable or desired form, is shown ashaving a diametrically-reduced journal proper, 7, Which forms a shoulderat 7', against which one end of the sleeve 2 abuts, and is shown ashaving, further, a reduced and screw-threaded end S to receive a nut 9,adapted to bear against the opposite end of said sleeve 2.

If the journal-bearing is to be used in connection with a wheel, thecentral member B (referred to as the shaft will constitute the axle ofthe wheel and the surrounding member C (referred to as the casing) willconstitute the hub of said wheel.

The casing C is shown in the drawings as a cylinder of substantiallyuniform diameter from end to end and being of somewhatenlarged externaldiameter near the central portion thereof; but it will be obvious thatthe invention is not limited to any particular external form of casing,as this may be modiiied to meet requirements. This cylinder is alsoshown internally screw-threaded at opposite ends to receive theconfining 'means d and d.

The sleeve 2 is shown symmetrical from end to end and of a lengthsomewhat less than the length of the casing C, the inner and outer facesof said sleeve being parallel to the axis of the shaft B, and the sleeve3 is shown having its inner and outer faces parallel to the outer faceof the sleeve 2, the inner face of said sleeve 3 being of a lengthcorresponding, substantially, to the length of the sleeve 2 and havingat that end thereof in juxtaposition to the shoulder 7 of the shaft aninternally-projecting annular flange 3', forming a runway for one set ofballs, as 5. i The confining means d in lconnection with one end of thecasing C is shown as comprising two confining-rings 10 and 10', screwedinto the end of the cylinder, the inner ring 10 of which is shown ofless internal diameter than the outer ring l0, and a dust-guard orpacking disposed between the inner edge of the ring 10 and the peripheryof the shaft B and between the inner face of said ring 10 and the outerface of the flange 3 on the sleeve 3. The confining means CZ consist inthe form shown of two rings 12 and 12', corresponding to the rings 10and l0 and screwed into the opposite end of the casing C in the samemanner as are the rings 10 and l0', a bearing or take-up ring 13,screwed into this end of the casing, with its inner face injuxtaposition to the adjacent end of the sleeve 3, to form a runway forthe other circuit of balls, as 6, and a dust-guard or packing 14,disposed between adjacent faces of the rings l2 and 13 and surroundingthe central portion of the periphery of the nut 9.

It will be obvious that the invention is not limited to the specificconstruction and organization of confining means as above described andas shown in Fig. 1 of the draw-` ings, as these may be modified withincertain limits without departure from this invention. The rollers 4,which are shown disposed between and in bearing engagement with adjacentfaces of the sleeves 2-and 3, are of elongated cylindrical constructionand have their opposite ends 4' and 4 preferably reduced and tapered onconical lines to fit between adjacent faces of adjacent balls of the twocircuits of balls 5 and 6, and the balls and rollers are v2 of thedrawings.

so located within the space between the two sleeves that the ends of therollers terminate within the peripheral lines of the balls or at pointssubstantially in the plane of the centers of the two circuits of balls,and the axes of said rollers substantially intersect the center of saidballs, and the balls and rollers are further so disposed relatively thatthey constitute separators for one another, the balls being located atopposite ends of the rollerchamber between the two sleeves 2 and 3 inalternating disposition with respect to and between the conical ends ofsaid rollers, as will be readily understood by reference to Fig.Furthermore, said balls are each of substantially the same diameter asthe diameter of each roller and have a bearing against adjacent faces ofthe two sleeves 2 and 3. The ends 4 and 4 of the rollers are so formedwith respect to the form of the balls that said balls will take up orreceive the end thrust of the rollers and will hold said rollers centralwith relation to the bearingfaces of thesleeves 2 and 3.

To take up any wear between the rollers and balls, it is simplynecessary to screw the ring 13 inward and adjust the rings 12 and 12accordingly, all of the wear being taken up in the form of bearing shownin the drawings bythe adjustment of the confining means d at one end ofthe casing, which includes the rings 12, 12', and 13.

By the above-described construction and organization of parts anantifriction-bearing is produced which will sustain heavy loads withoutinjury to vthe true running of the rolling elements thereof and onewhich may be quickly assembled and disassembled and which will bepractically dust-proof.

A roller-bearing consisting of a shaft having a shoulder; a casingsurrounding said shaft; two concentrically-disposed tubular sleevesfixed respectively to the exterior of the shaft and the interior of thecasing and forming between them a symmetrical annular raceway havingopposing bearing-faces parallel to each other and parallel to the axisof the shaft, and the inner sleeve of which abuts at one end against theshaft-shoulder and the outer sleeve of which has at one end thereof aninternal annular ange; a take-up ring screwed into the casing and havingits inner face in juxtaposition to the non-flanged end of the externalsleeve; two independent circuits of relatively separated balls located,respectively, in opposite ends of the raceway, and one circuit of balls-having bearings against the inner face of the flange and opposing facesof the two sleeves, and the other set of balls having bearings againstthe inner face of the take-up ring and the opposing faces of the twosleeves, a circuit of relatively separated cylindrical rollers havingbearings against oppos- IOO IIO

ing faces of the two sleeves and having` rethe take-np ring` at one endof the casing, and duced 4conical ends 'fitting between adjacent theother of which is interposed between the balls of the two circuits ofballs and terminatconfining-ring,` and sleeve-flange at the other ingwithin the peripheral lines of said balls, end of the casingsubstantially as described.

5 and retaining said balls in separated relation Signed by meat Boston,Massachusetts, this 15 and With their peripheries in bearing contact20th day of April, 1900.

With the iiange and take-up ring respectively; THOMAS B. DOOLEY.confining-rings screwed into opposite ends of Witnesses: the casing; andtwo clust-guards one of which WALTER E. LOMBARD7 lo is interposedbetween the confining-ring and l EDWARD H. TEMPLE.

